Jeff, I think the wishful thinking is that impedance will be adequately controlled without stipulating as much in the purchase contract. I believe that such wishful and presumptuous thinking is dangerous. Best Regards, Steve On 1/5/2012 7:22 AM, Loyer, Jeff wrote: > Perhaps I'm the only one who is finding it ironic that, on a "Signal > Integrity" reflector list, "Impedance Controlled" isn't considered "Normal". > I haven't had the luxury of not specifying impedance control since a small > 33MHz PCI card design, many years ago. > > I'm afraid Jayasuryan that you won't find the answer you're looking for on an > e-mail thread, or it is going to be a long, drawn out, painful affair. You > have a lot of work to do to understand what impedance control is and how it > relates to signal integrity. I would recommend starting with the books that > have been listed many times on this list. You can also search the archives > for "impedance control" to find discussions about different opinions on how > much is enough. > > Good luck in the new year, > Jeff Loyer > > -----Original Message----- > From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On > Behalf Of steve weir > Sent: Monday, January 02, 2012 6:23 AM > To: si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: Impedance Controlled Board Production Vs Normal Board > Production > > Suppose as you like. Hope as you might. What you don't contract is not > guaranteed. > > Steve. > On 1/2/2012 5:56 AM, Jayasuryan KG wrote: >> Dear Experts, >> >> >> >> Happy New Year!! >> >> >> >> I have question regarding the impedance controlled board production! >> Is there any special process to produce impedance controlled board >> >> rather than the normal production? >> >> >> >> Suppose if I go with normal production for a impedance controlled board >> (the design has been done to meet the impedance) what are the possible >> issues can happen? >> >> >> >> Looking for your immediate response. Thanks in advance. >> >> >> >> Best Regards, >> >> - Jayasuryan >> >> ------------------------------------------------------------------ >> To unsubscribe from si-list: >> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >> >> or to administer your membership from a web page, go to: >> //www.freelists.org/webpage/si-list >> >> For help: >> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field >> >> >> List technical documents are available at: >> http://www.si-list.net >> >> List archives are viewable at: >> //www.freelists.org/archives/si-list >> >> Old (prior to June 6, 2001) list archives are viewable at: >> http://www.qsl.net/wb6tpu >> >> >> > > -- > Steve Weir > IPBLOX, LLC > 150 N. Center St. #211 > Reno, NV 89501 > www.ipblox.com > > (775) 299-4236 Business > (866) 675-4630 Toll-free > (707) 780-1951 Fax > > All contents Copyright (c)2012 IPBLOX, LLC. All Rights Reserved. > This e-mail may contain confidential material. > If you are not the intended recipient, please destroy all records and notify > the sender. > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > -- Steve Weir IPBLOX, LLC 150 N. Center St. #211 Reno, NV 89501 www.ipblox.com (775) 299-4236 Business (866) 675-4630 Toll-free (707) 780-1951 Fax All contents Copyright (c)2012 IPBLOX, LLC. All Rights Reserved. This e-mail may contain confidential material. If you are not the intended recipient, please destroy all records and notify the sender. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu